include/asm-sparc/ide.h

   1 /* ide.h: SPARC PCI specific IDE glue.
   2  *
   3  * Copyright (C) 1997  David S. Miller (davem@davemloft.net)
   4  * Copyright (C) 1998  Eddie C. Dost   (ecd@skynet.be)
   5  * Adaptation from sparc64 version to sparc by Pete Zaitcev.
   6  */
   7
   8 #ifndef _SPARC_IDE_H
   9 #define _SPARC_IDE_H
  10
  11 #ifdef __KERNEL__
  12
  13 #include <asm/pgtable.h>
  14 #include <asm/io.h>
  15 #include <asm/psr.h>
  16
  17 #undef  MAX_HWIFS
  18 #define MAX_HWIFS       2
  19
  20 #define ide_default_io_ctl(base)        ((base) + 0x206) /* obsolete */
  21
  22 #define __ide_insl(data_reg, buffer, wcount) \
  23         __ide_insw(data_reg, buffer, (wcount)<<1)
  24 #define __ide_outsl(data_reg, buffer, wcount) \
  25         __ide_outsw(data_reg, buffer, (wcount)<<1)
  26
  27 /* On sparc, I/O ports and MMIO registers are accessed identically.  */
  28 #define __ide_mm_insw   __ide_insw
  29 #define __ide_mm_insl   __ide_insl
  30 #define __ide_mm_outsw  __ide_outsw
  31 #define __ide_mm_outsl  __ide_outsl
  32
  33 static inline void __ide_insw(unsigned long port,
  34                                   void *dst,
  35                                   unsigned long count)
  36 {
  37         volatile unsigned short *data_port;
  38         /* unsigned long end = (unsigned long)dst + (count << 1); */ /* P3 */
  39         u16 *ps = dst;
  40         u32 *pi;
  41
  42         data_port = (volatile unsigned short *)port;
  43
  44         if(((unsigned long)ps) & 0x2) {
  45                 *ps++ = *data_port;
  46                 count--;
  47         }
  48         pi = (u32 *)ps;
  49         while(count >= 2) {
  50                 u32 w;
  51
  52                 w  = (*data_port) << 16;
  53                 w |= (*data_port);
  54                 *pi++ = w;
  55                 count -= 2;
  56         }
  57         ps = (u16 *)pi;
  58         if(count)
  59                 *ps++ = *data_port;
  60
  61         /* __flush_dcache_range((unsigned long)dst, end); */ /* P3 see hme */
  62 }
  63
  64 static inline void __ide_outsw(unsigned long port,
  65                                    const void *src,
  66                                    unsigned long count)
  67 {
  68         volatile unsigned short *data_port;
  69         /* unsigned long end = (unsigned long)src + (count << 1); */
  70         const u16 *ps = src;
  71         const u32 *pi;
  72
  73         data_port = (volatile unsigned short *)port;
  74
  75         if(((unsigned long)src) & 0x2) {
  76                 *data_port = *ps++;
  77                 count--;
  78         }
  79         pi = (const u32 *)ps;
  80         while(count >= 2) {
  81                 u32 w;
  82
  83                 w = *pi++;
  84                 *data_port = (w >> 16);
  85                 *data_port = w;
  86                 count -= 2;
  87         }
  88         ps = (const u16 *)pi;
  89         if(count)
  90                 *data_port = *ps;
  91
  92         /* __flush_dcache_range((unsigned long)src, end); */ /* P3 see hme */
  93 }
  94
  95 #endif /* __KERNEL__ */
  96
  97 #endif /* _SPARC_IDE_H */